-7(1+2a)=-28

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Solution for -7(1+2a)=-28 equation: 


Simplifying
-7(1 + 2a) = -28
(1 * -7 + 2a * -7) = -28
(-7 + -14a) = -28

Solving
-7 + -14a = -28

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '7' to each side of the equation.
-7 + 7 + -14a = -28 + 7

Combine like terms: -7 + 7 = 0
0 + -14a = -28 + 7
-14a = -28 + 7

Combine like terms: -28 + 7 = -21
-14a = -21

Divide each side by '-14'.
a = 1.5

Simplifying
a = 1.5

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